By Topic

Automatic Control, IEEE Transactions on

Issue 5 • Date October 1973

Filter Results

Displaying Results 1 - 25 of 53
  • [Front cover and table of contents]

    Publication Year: 1973 , Page(s): 0
    Save to Project icon | Request Permissions | PDF file iconPDF (153 KB)  
    Freely Available from IEEE
  • In memoriam - O. Hugo Schuck, 1909-1972

    Publication Year: 1973 , Page(s): 417 - 418
    Save to Project icon | Request Permissions | PDF file iconPDF (267 KB)  
    Freely Available from IEEE
  • Comments on "Lyapunov functions for quadratic differential equations with applications to adaptive control"

    Publication Year: 1973 , Page(s): 559 - 561
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (293 KB)  

    The adaptation laws existing in known model reference systems are shown to be unfavorably determined by the underlying basic structure. Simulation results are also given, which demonstrate that the adaptivity itself can be limited, if not missing, when the chosen structure implies stability domain restrictions. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Authors' reply

    Publication Year: 1973 , Page(s): 561 - 562
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (189 KB)  

    First Page of the Article
    View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Correction to "Conditions for asymptotic stability of the discrete minimum-variance linear estimator"

    Publication Year: 1973 , Page(s): 562 - 563
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (159 KB)  

    This note presents bounds on the discrete Riccati equation, correcting an error in proving the stability of discrete-time minimum variance estimators. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Correction to "Properties of linear multivariable systems subject to arbitrary output and state feedback"

    Publication Year: 1973 , Page(s): 563
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (64 KB)  

    First Page of the Article
    View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Introduction to control systems design

    Publication Year: 1973 , Page(s): 565
    Save to Project icon | Request Permissions | PDF file iconPDF (162 KB)  
    Freely Available from IEEE
  • [Back cover]

    Publication Year: 1973 , Page(s): 0
    Save to Project icon | Request Permissions | PDF file iconPDF (204 KB)  
    Freely Available from IEEE
  • Stability and subharmonic responses of a nonlinear system with dither injection

    Publication Year: 1973 , Page(s): 529 - 530
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (240 KB)  

    The stability properties of a nonlinear system containing a relay with hysteresis, and subjected to high-frequency dither injection, are discussed. Subharmonic responses of the system are reported, including a jump resonance between two sub-harmonics. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • On stability of discrete composite systems

    Publication Year: 1973 , Page(s): 522 - 524
    Cited by:  Papers (13)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (296 KB)  

    Conditions are developed under which exponential stability of a composite discrete system is implied by exponential stability of its subsystems and the nature of their interactions. Stability of the system is determined by testing positive definiteness property of a real symmetric matrix the dimension of which is equal to the number of subsystems. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A fast algorithm for optimum linear predictors

    Publication Year: 1973 , Page(s): 555
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (144 KB)  

    An algorithm is given for calculation of the time-varying-coefficients of the linear least squares predictors for stationary processes. The algorithm requires an order of magnitude fewer arithmetic operations than the best of the earlier known algorithms. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A note on the representation of white noise in continuous dynamical systems

    Publication Year: 1973 , Page(s): 548 - 549
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (256 KB)  

    A discussion of generalizations of white-noise inputs in continuous dynamical systems in finite and infinite dimensions is given. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Moving-cell vehicle control over nonlevel terrain

    Publication Year: 1973 , Page(s): 525 - 527
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (304 KB)  

    The application of a proportional-integral-differential (PID) control scheme to the problem of regulating the longitudinal motion of vehicles traversing nonlevel terrain is presented. A third-order representation of the vehicle dynamics is used, and a moving-cell (fixed reference) controller is designed using pole placement techniques. Analog computer simulation results are presented. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An optimal learning algorithm for S-model environments

    Publication Year: 1973 , Page(s): 493 - 496
    Cited by:  Papers (8)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (432 KB)  

    A class of stochastic automata models is proposed for the synthesis of a parameter optimizing controller. The automaton can operate in environments characterized by reward strengths ( S -models) or reward probabilities ( P -models). In the P -model case the proposed algorithm is equivalent to the ε-optimal algorithm reported by Shapiro and Narendra. The algorithm discussed here was originally reported by Mason with emphasis on the P -model case. In this paper, emphasis is placed on the S -model case. Recently, an equivalent ε-optimal algorithm has been reported by Viswanathan and Narendra. It is Shown herein that only the optimal solution is stable and that the expected performance converges monotonically. Simulation results are presented that corroborate the analytical results. It is demonstrated that the proposed algorithm is superior tO McLaren's linear reinforcement scheme in regard to expediency. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • On the adaptive control of linear systems using the open-loop-feedback-optimal approach

    Publication Year: 1973 , Page(s): 489 - 493
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (432 KB)  

    This paper considers the suboptimal stochastic control of linear discrete-time dynamical systems with uncertain or stochastically varying parameters. The suboptimal scheme is based upon the use of the open-loop-feedback-optimal (OLFO) method. The state and parameter estimates are generated by an extended Kalman filter algorithm. Numerical results for first-order systems are presented. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Comparative studies of model reference adaptive control systems

    Publication Year: 1973 , Page(s): 419 - 428
    Cited by:  Papers (18)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (920 KB)  

    A brief but up-to-date survey on existing methods of designing a class of model reference adaptive control systems is given in this paper. A comparison of the merits of the various design rules is also made with particular attention to the M.I.T. rule and the Lyapunov synthesis technique. Subsequently a systematic performance comparison of the various designs, with deterministic as well as stochastic inputs, is presented using the computer simulation studies of two simple gain adjustment schemes. From the dimensionless characteristic graphs obtained the Lyapunov schemes are found to exhibit superior performance over other designs. These graphs also uncover the strange adaptive response of those designs based on gradient methods in that the performance index may increase or decrease with increasing system gain parameters. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Introducing system engineering

    Publication Year: 1973 , Page(s): 564 - 565
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (296 KB)  

    First Page of the Article
    View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Discrete-time system identification by the correlation method

    Publication Year: 1973 , Page(s): 551 - 552
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (192 KB)  

    The pseudorandom binary sequence is applied to the parameter estimation of discrete-time systems. The proposed method, based on the correlation analysis, gives a computationally simple and effective way of parameter estimation. The estimates of the parameters are shown to be asymptotically unbiased. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Nonlinear regulator theory and an inverse optimal control problem

    Publication Year: 1973 , Page(s): 460 - 465
    Cited by:  Papers (63)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (608 KB)  

    Nonlinear optimal regulators are discussed, and some useful properties are isolated. An inverse problem of nonlinear regulator design is posed and solved. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Behavioral consistency tests of econometric models

    Publication Year: 1973 , Page(s): 465 - 472
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (912 KB)  

    Most econometric models have many versions which differ from one another by 1) minor variations in the specification, or 2) choice of parameter estimator. This paper demonstrates how control theory can be employed to discriminate between alternative versions of an econometric model. For many policy problems involving a simple objective function and a single control variable, the investigator can hypothesize from the tenets of a given economic theory qualitative characteristics of the optimal economic behavior. By computing the optimal economic policy, the investigator can determine which versions are consistent with the hypothesis. This procedure was employed to determine which versions of a revised form of the Klein-Goldberger model are consistent with three hypotheses derived from economic theory. For the first two hypotheses, the results indicate that consistency depends on the choice of parameter estimates. For the third hypothesis, an inflation test at full employment, the results indicate that all versions are inconsistent with the hypothesis. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An adaptive observer and identifier for a linear system

    Publication Year: 1973 , Page(s): 496 - 499
    Cited by:  Papers (67)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (384 KB)  

    An adaptive scheme is devised which observes the state and simultaneously identifies all the parameters of a single-input single-output n th-order linear system. The scheme uses only the input and the output signals of the system and does not involve the use of derivatives of these signals. The adaptive scheme is proved to be globally asymptotically stable, thus ensuring the convergence of the identification process. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • On the stabilization of decentralized control systems

    Publication Year: 1973 , Page(s): 473 - 478
    Cited by:  Papers (247)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (552 KB)  

    This paper considers the problem of stabilizing a linear time-invariant multivariable system by using several local feedback control laws. Each local feedback control law depends only on partial system outputs. A necessary and sufficient condition for the existence of local control laws with dynamic compensation to stabilize a given system is derived. This condition is stated in terms of a new notion, called "fixed modes," which is a natural generalization of the well-known concept of uncontrollable modes and unobservable modes that occur in centralized control system problems. A procedure that constructs a set of stabilizing feedback control laws is given. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Estimation and decision for linear systems with elliptical random processes

    Publication Year: 1973 , Page(s): 499 - 505
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (584 KB)  

    A random variable is said to have elliptical distribution if its probability density is a function of a quadratic form. This class includes the Gaussian and many other useful densities in statistics. It is shown in this paper that this class of densities can be expressed as integrals of a set of Gaussian densities. This property is not changed under linear transformation of the random variables. It is also proved in this paper that the conditional expectation is linear with exactly the same form as the Gaussian case. Many estimation results of the Gaussian case can be readily extended. Problems of computing optimal estimation, filtering, stochastic control, and team decisions in various linear systems become tractable for this class of random processes. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Nonlinear identification in the presence of correlated noise using a Hammerstein model

    Publication Year: 1973 , Page(s): 552 - 555
    Cited by:  Papers (23)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (376 KB)  

    A simple iterative technique for the estimation of parameters in a Hammerstein model is developed for the case when noise in the output data is correlated. Asymptotically unbiased estimates are obtained rapidly by employing a systematic procedure for the determination of a scalar stepping factor at each iteration. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Static decoupling

    Publication Year: 1973 , Page(s): 536 - 537
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (232 KB)  

    The question of "statically decoupling" a linear multivariable system is formally introduced and resolved in this correspondence. Necessary and sufficient conditions for statically decoupling multivariable systems via linear state variable feedback are given and constructively illustrated. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.

Aims & Scope

In the IEEE Transactions on Automatic Control, the IEEE Control Systems Society publishes high-quality papers on the theory, design, and applications of control engineering.  Two types of contributions are regularly considered

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
P. J. Antsaklis
Dept. Electrical Engineering
University of Notre Dame